From Frankfurt airport:
Take the freeway A 3, then shortly A 67 and then A 60, always direction Mainz.
Stay on freeway A 60 direction Koblenz and take the exit St. Goar/Bingen to the highway B 9, – the road parallel to the Rhine river from Bingen to Oberwesel and Schoenburg castle.

From the North:
Take the freeway A61 direction Ludwigshafen, exit Laudert/Oberwesel.
After the exit take the second street to the right via the villages Perscheid and Dellhofen to Schoenburg castle, about 10 Kms.